\u4e0a\u8bfe\u7684\u5730\u65b9arp\u6a2a\u884c\uff0c\u603b\u662f\u4e0a\u4e0d\u53bb\u7f51\u3002
\n\t\u7814\u7a76\u4e86\u4e00\u4e0barp\u529f\u51fb\u7684\u4ee3\u7801\u3002\u603b\u7528\u66f4\u9ad8\u7684\u9891\u7387\u6765\u89e3\u51b3\u529f\u51fb\u7f51\u5173\u7684\u95ee\u9898\uff0c\u5931\u8d25\u544a\u7ec8\u3002<\/p>\n
\u6293\u5305<\/p>\n
#include <stdio.h>
\n\t#include <stdlib.h>
\n\t#include <sys\/socket.h>
\n\t#include <sys\/types.h>
\n\t#include <string.h>
\n\t#include <linux\/if_packet.h>
\n\t#include <linux\/if_ether.h>
\n\t#include <arpa\/inet.h>
\n\t#include <net\/if.h>
\n\t#include <errno.h>
\n\t#include <sys\/ioctl.h>
\n\t#include <unistd.h>
\n\t#include <sys\/socket.h>
\n\t#include <arpa\/inet.h><\/p>\n
void print_arp(unsigned char *a,int len)
\n\t{
\n\t int i;
\n\t char ccc='1';
\n\t for(i=0;i<len;i++){
\n\t if(i==6 || i==12 || i==14 || i==16 || i==18 || i==19 || i==20 || i==22 || i==28 || i==32 || i==38 || i==42)
\n\t putchar('|');
\n\t if((i>=28 && i<=31) || (i>=38 && i<=41))
\n\t printf("%d.",a[i]);
\n\t else
\n\t printf("%02x",a[i]);
\n\t \/\/fflush(stdout);
\n\t }
\n\t putchar('n');
\n\t}
\n\tvoid print_eth(unsigned char *a,int len)
\n\t{
\n\t int i;
\n\t for(i=0;i<len;i++){
\n\t printf("%02x",a[i]);
\n\t }
\n\t putchar('n');
\n\t}<\/p>\n
int set_promisc(char *interface, int fd) {
\n\t struct ifreq ifr;
\n\t strcpy(ifr.ifr_name, interface);
\n\t if(ioctl(fd, SIOCGIFFLAGS, &ifr) == -1) {
\n\t perror("iotcl()");
\n\t return -1;
\n\t }
\n\t ifr.ifr_flags |= IFF_PROMISC;
\n\t if(ioctl(fd, SIOCSIFFLAGS, &ifr) == -1) {
\n\t perror("iotcl()");
\n\t return -1;
\n\t }
\n\t return 0;
\n\t}<\/p>\n
int main(int argc, char **argv) {
\n\t int sock, n;
\n\t unsigned char buffer[2048];
\n\t unsigned char *iphead, *ethhead;
\n\t struct sockaddr_ll sll;<\/p>\n
\/\/ if(argc != 3){
\n\t \/\/ printf("need interface name and protocol as argumentsn");
\n\t \/\/ return -1;
\n\t \/\/ }<\/p>\n
if ( (sock=socket(PF_PACKET, SOCK_RAW,
\n\t htons(ETH_P_ARP)))<0) {
\n\t perror("socket");
\n\t exit(1);
\n\t }
\n\t sll.sll_family = PF_PACKET;
\n\t \/\/ sll.sll_ifindex = Get_IfaceIndex(sock,argv[1]); \/\/\u901a\u8fc7\u6b64\u5904\u4f20\u5165\u7f51\u7edc\u8bbe\u5907\u63a5\u53e3
\n\t struct ifreq ifstruct;
\n\t strcpy(ifstruct.ifr_name, "eth0");
\n\t \/\/sll.sll_protocol = htons(atoi(argv[2]));
\n\t sll.sll_protocol=htons(ETH_P_ARP);<\/p>\n
if(bind(sock,(struct sockaddr *)(&sll),sizeof(sll))==-1)
\n\t {
\n\t printf("bind error:%s !n",strerror(errno));
\n\t return -1;
\n\t }<\/p>\n
\/\/int set_promisc(char *interface, int fd) {
\n\t if(set_promisc("eth0",sock) == -1)
\n\t {
\n\t printf("BLUE set promisc failed !n");
\n\t return -1;
\n\t }<\/p>\n
while (1) {
\n\t printf("—–recive start—–n");
\n\t n = recvfrom(sock,buffer,2048,0,NULL,NULL);
\n\t printf("%d bytes readn",n);
\n\t printf("index:%dn",sll.sll_ifindex );
\n\t \/* Check to see if the packet contains at least
\n\t * complete Ethernet (14), IP (20) and TCP\/UDP
\n\t * (8) headers.
\n\t *\/
\n\t if (n<42) {
\n\t perror("recvfrom():");
\n\t printf("Incomplete packet (errno is %d)n",
\n\t errno);
\n\t close(sock);
\n\t exit(0);
\n\t }<\/p>\n
ethhead = buffer;
\n\t printf("Destination MAC address: "
\n\t "%02x:%02x:%02x:%02x:%02x:%02xn",
\n\t ethhead[0],ethhead[1],ethhead[2],
\n\t ethhead[3],ethhead[4],ethhead[5]);
\n\t printf("Source MAC address: "
\n\t "%02x:%02x:%02x:%02x:%02x:%02xn",
\n\t ethhead[6],ethhead[7],ethhead[8],
\n\t ethhead[9],ethhead[10],ethhead[11]);
\n\t printf("protocal:"
\n\t "0x%02x%02xn",ethhead[12],ethhead[13]);<\/p>\n
iphead = buffer+14; \/* Skip Ethernet header *\/
\n\t if (*iphead==0x45) { \/* Double check for IPv4
\n\t * and no options present *\/
\n\t printf("Source host %d.%d.%d.%dn",
\n\t iphead[12],iphead[13],
\n\t iphead[14],iphead[15]);
\n\t printf("Dest host %d.%d.%d.%dn",
\n\t iphead[16],iphead[17],
\n\t iphead[18],iphead[19]);
\n\t printf("Source,Dest ports %d,%dn",
\n\t (iphead[20]<<8)+iphead[21],
\n\t (iphead[22]<<8)+iphead[23]);
\n\t printf("Layer-4 protocol %dn",iphead[9]);
\n\t }
\n\t \/\/print_eth(1,buffer,512);
\n\t print_arp(ethhead,48);
\n\t \/\/ print_eth(ethhead,n);
\n\t }<\/p>\n
}
\n\t <\/p>\n
\u529f\u51fb<\/p>\n
#include <stdio.h>
\n\t#include <stdlib.h>
\n\t#include <sys\/socket.h>
\n\t#include <sys\/types.h>
\n\t#include <string.h>
\n\t#include <linux\/if_packet.h>
\n\t#include <linux\/if_ether.h>
\n\t#include <arpa\/inet.h>
\n\t#include <net\/if.h>
\n\t#include <errno.h>
\n\t#include <sys\/ioctl.h>
\n\t#include <unistd.h>
\n\t#include <sys\/socket.h>
\n\t#include <arpa\/inet.h><\/p>\n
void print_eth(unsigned char *a,int len)
\n\t{
\n\t int i;
\n\t for(i=0;i<len;i++){
\n\t printf("%02x",a[i]);
\n\t }
\n\t putchar('n');
\n\t}
\n\tint set_promisc(char *interface, int fd) {
\n\t struct ifreq ifr;
\n\t strcpy(ifr.ifr_name, interface);
\n\t if(ioctl(fd, SIOCGIFFLAGS, &ifr) == -1) {
\n\t perror("iotcl()");
\n\t return -1;
\n\t }
\n\t ifr.ifr_flags |= IFF_PROMISC;
\n\t if(ioctl(fd, SIOCSIFFLAGS, &ifr) == -1) {
\n\t perror("iotcl()");
\n\t return -1;
\n\t }
\n\t return 0;
\n\t}<\/p>\n
int main(int argc, char **argv){
\n\t int sock;
\n\t char SendBuffer[64];
\n\t char intfname[16];
\n\t struct sockaddr_ll dest;
\n\t struct sockaddr_ll sll;<\/p>\n
memset(&dest,0,sizeof(dest));
\n\t memset(&sll,0,sizeof(sll));
\n\t strcpy(intfname,argv[1]);
\n\t dest.sll_family=AF_PACKET;
\n\t dest.sll_protocol=htons(ETH_P_ALL);
\n\t if ( (sock=socket(PF_PACKET, SOCK_RAW,
\n\t htons(ETH_P_ALL)))<0) {
\n\t perror("socket");
\n\t exit(1);
\n\t }<\/p>\n
sll.sll_family = AF_PACKET;
\n\t \/\/ sll.sll_ifindex = Get_IfaceIndex(sock,intfname);
\n\t struct ifreq ifstruct;
\n\t strcpy(ifstruct.ifr_name, "eth0");
\n\t sll.sll_protocol = htons(ETH_P_ALL);
\n\t dest.sll_ifindex =sll.sll_ifindex;
\n\t dest.sll_halen = 6;
\n\t memcpy((char*)dest.sll_addr,SendBuffer,6);<\/p>\n
if(bind(sock,(struct sockaddr *)(&sll),sizeof(sll))==-1)
\n\t {
\n\t printf("bind error!!n");
\n\t return 0;
\n\t }<\/p>\n
if(set_promisc("eth0",sock) == -1)
\n\t {
\n\t printf("BLUE set promisc failed !n");
\n\t return 0;
\n\t }<\/p>\n
printf("nnnn—-send start——n");
\n\t print_eth(SendBuffer,64);
\n\t sendto(sock,&SendBuffer,64,0,(struct sockaddr *)(&dest),sizeof(dest));
\n\t \/\/printf("send to %x:%x:%x:%x:%x:%xn",dest.sll_addr[0],dest.sll_addr[1],dest.sll_addr[2],dest.sll_addr[3],dest.sll_addr[4],dest.sll_addr[5]);
\n\t printf("—send success—-n");<\/p>\n
return 0;
\n\t}
\n\t <\/p>\n
\u539f\u6587\u4ef6\u4e0b\u8f7d:<\/p>\n
tt2<\/a> tt1<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" \u4e0a\u8bfe\u7684\u5730\u65b9arp\u6a2a\u884c\uff0c\u603b\u662f\u4e0a\u4e0d\u53bb\u7f51\u3002 \u7814\u7a76\u4e86\u4e00\u4e0barp\u529f\u51fb\u7684\u4ee3\u7801\u3002\u603b\u7528\u66f4\u9ad8\u7684\u9891\u7387\u6765\u89e3\u51b3\u529f\u51fb\u7f51\u5173\u7684\u95ee\u9898\uff0c\u5931\u8d25\u544a\u7ec8 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-761","post","type-post","status-publish","format-standard","hentry","category-linux-c"],"_links":{"self":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=761"}],"version-history":[{"count":0,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/761\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}